3.13.11-ckt25 -stable review patch.  If anyone has any objections, please let 
me know.

------------------

From: =?UTF-8?q?Dominic=20Sacr=C3=A9?= <[email protected]>

commit 0689a86ae814f39af94a9736a0a5426dd82eb107 upstream.

The Steinberg MI2 and MI4 interfaces are compatible with the USB class
audio spec, but the MIDI part of the devices is reported as a vendor
specific interface.

This patch adds entries to quirks-table.h to recognize the MIDI
endpoints. Audio functionality was already working and is unaffected by
this change.

Signed-off-by: Dominic Sacré <[email protected]>
Signed-off-by: Albert Huitsing <[email protected]>
Acked-by: Clemens Ladisch <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>
Signed-off-by: Kamal Mostafa <[email protected]>
---
 sound/usb/quirks-table.h | 68 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)

diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index 0acb7c6..e3bd28a 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -2546,6 +2546,74 @@ YAMAHA_DEVICE(0x7010, "UB99"),
        }
 },
 
+/* Steinberg devices */
+{
+       /* Steinberg MI2 */
+       USB_DEVICE_VENDOR_SPEC(0x0a4e, 0x2040),
+       .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
+               .ifnum = QUIRK_ANY_INTERFACE,
+               .type = QUIRK_COMPOSITE,
+               .data = & (const struct snd_usb_audio_quirk[]) {
+                       {
+                               .ifnum = 0,
+                               .type = QUIRK_AUDIO_STANDARD_INTERFACE
+                       },
+                       {
+                               .ifnum = 1,
+                               .type = QUIRK_AUDIO_STANDARD_INTERFACE
+                       },
+                       {
+                               .ifnum = 2,
+                               .type = QUIRK_AUDIO_STANDARD_INTERFACE
+                       },
+                       {
+                               .ifnum = 3,
+                               .type = QUIRK_MIDI_FIXED_ENDPOINT,
+                               .data = &(const struct 
snd_usb_midi_endpoint_info) {
+                                       .out_cables = 0x0001,
+                                       .in_cables  = 0x0001
+                               }
+                       },
+                       {
+                               .ifnum = -1
+                       }
+               }
+       }
+},
+{
+       /* Steinberg MI4 */
+       USB_DEVICE_VENDOR_SPEC(0x0a4e, 0x4040),
+       .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
+               .ifnum = QUIRK_ANY_INTERFACE,
+               .type = QUIRK_COMPOSITE,
+               .data = & (const struct snd_usb_audio_quirk[]) {
+                       {
+                               .ifnum = 0,
+                               .type = QUIRK_AUDIO_STANDARD_INTERFACE
+                       },
+                       {
+                               .ifnum = 1,
+                               .type = QUIRK_AUDIO_STANDARD_INTERFACE
+                       },
+                       {
+                               .ifnum = 2,
+                               .type = QUIRK_AUDIO_STANDARD_INTERFACE
+                       },
+                       {
+                               .ifnum = 3,
+                               .type = QUIRK_MIDI_FIXED_ENDPOINT,
+                               .data = &(const struct 
snd_usb_midi_endpoint_info) {
+                                       .out_cables = 0x0001,
+                                       .in_cables  = 0x0001
+                               }
+                       },
+                       {
+                               .ifnum = -1
+                       }
+               }
+       }
+},
+
 /* TerraTec devices */
 {
        USB_DEVICE_VENDOR_SPEC(0x0ccd, 0x0012),
-- 
1.9.1

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